Head gasket recommendations for magnum

Alrighty finally got my degree wheel and degreed the cam and
did the procedure to verify LSA and got 108 and and moved on to check the intake centerline and got 104! So my understanding is if it’s lower than the LSA it’s advanced or if it’s higher it’s retarded, correct me if I’m wrong on that. But seeing this, it was advanced a total of 4 degrees on the cam and not 2 degrees which I thought since on an aftermarket 3 key way crank sprocket 4 degrees advance or retard on the crank equates to 2 degrees on the cam. Correct me if I’m wrong on that too. Double checked this and it was correct so on the crank sprocket the advance position was not 4 degrees but was actually 8 degrees. Go figure Think it was an off brand timing set.
Took the timing chain off, put it straight up and got 108 ICL which matches my LSA. For ***** and giggles I Just wanted to check what it was being retarded 4 degrees on the crank and verified a 2 degrees retard on the cam at 110 ICL.
Took the timing chain back off and put it straight up. Checked piston to valve clearence using play dough, used no head gasket and got 070int./0.090 exh. Clearence. The play dough was hard to measure so did the measurement twice and got just about the same numbers so I think my problem all along was too much frkn advance.. gonna degree every frkn engine i build now so I don’t run into this problem again. Should be able to use a thinner gasket now too.